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Wisconsin

$78+ Cheap flights from Ontario (ONT) to Wisconsin

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MKE
Aug 16 — Aug 231
Sat 8/16
Sat 8/23
1 adult, Economy
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Cheap flight deals from Ontario to Wisconsin

Keep the following information in mind while searching for Ontario to Wisconsin flight deals. Data was last updated August 11, 2025.

Round-trip from

$206
(Alaska Airlines)

One-way from

$87
(United Airlines)

Popular in

December

Cheapest in

August

Average price

$278
From Ontario to Wisconsin
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One-way flight from Ontario to Wisconsin
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Highest demand for flights based on searches. 12% potential increase in price ($56 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Ontario to Wisconsin

Cheapest flights from Ontario to Wisconsin
Explore the most affordable flight options available from Ontario to Wisconsin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 11, 2025.

This Alaska Airlines deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/303:06 pmONT - MSP
1 stop6h 55mAlaska Airlines
Wed 10/87:00 amMSP - ONT
1 stop7h 37mAlaska Airlines
Deal found 8/11$206
This FlightHub deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/34:08 pmONT - MSP
1 stop26h 38mFrontier
Wed 10/87:50 amMSP - ONT
1 stop18h 00mFrontier
Deal found 8/8$214
This Southwest deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/215:10 amONT - ORD
1 stop8h 10mSouthwest
Wed 9/247:00 amORD - ONT
1 stop9h 40mSouthwest
Deal found 8/11$215
This Mytrip deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1912:59 amONT - ORD
1 stop18h 43mFrontier
Mon 8/256:00 amORD - ONT
1 stop19h 50mFrontier
Deal found 8/11$216
This Justfly.com deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/96:53 amONT - MSP
1 stop15h 00mFrontier
Tue 10/147:50 amMSP - ONT
1 stop18h 00mFrontier
Deal found 8/8$217
This United Airlines deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/217:00 amONT - ORD
Nonstop4h 03mUnited Airlines
Wed 9/242:53 pmORD - ONT
1 stop7h 50mUnited Airlines
Deal found 8/11$217
This FlightHub deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/43:43 pmONT - MSP
1 stop6h 34mFrontier
Sat 9/68:00 amMSP - ONT
1 stop13h 54mFrontier
Deal found 8/9$219
This Booking.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1712:59 amONT - ORD
1 stop21h 33mFrontier
Wed 8/277:20 amORD - ONT
1 stop18h 30mFrontier
Deal found 8/11$219
This Alaska Airlines deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/23:06 pmONT - MSP
1 stop6h 55mAlaska Airlines
Wed 10/87:00 amMSP - ONT
1 stop7h 37mAlaska Airlines
Deal found 8/11$220
This Southwest deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/83:30 pmONT - MSP
1 stop5h 40mSouthwest
Tue 9/166:50 pmMSP - ONT
1 stop5h 15mSouthwest
Deal found 8/11$221
This Gotogate deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/255:09 pmONT - ORD
1 stop26h 33mFrontier
Thu 8/286:00 amORD - ONT
1 stop19h 50mFrontier
Deal found 8/11$221
This Booking.com deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/212:59 amONT - MSP
1 stop17h 55mFrontier
Wed 9/108:00 amMSP - ONT
1 stop13h 54mFrontier
Deal found 8/9$222

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Wisconsin that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 11, 2025.
Use the filters below to find and compare flights from Ontario to Wisconsin that are best for you.

Fly from

Ontario

Fly to

Wisconsin

Route

Depart

Return

Price

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

Tue 9/30

3:06 pm-12:01 am

1 stop6h 55m

Minneapolis St Paul

Wed 10/8

7:00 am-12:37 pm

1 stop7h 37m

$206

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

Fri 10/3

4:08 pm-8:46 pm

1 stop26h 38m

Minneapolis St Paul

Wed 10/8

7:50 am-11:50 pm

1 stop18h 00m

$214

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

Thu 10/9

6:53 am-11:53 pm

1 stop15h 00m

Minneapolis St Paul

Tue 10/14

7:50 am-11:50 pm

1 stop18h 00m

$217

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

Thu 9/4

3:43 pm-12:17 am

1 stop6h 34m

Minneapolis St Paul

Sat 9/6

8:00 am-7:54 pm

1 stop13h 54m

$219

OntarioChicago

ONT - ORD

ONTORD

Ontario

Mon 9/1

12:59 am-9:42 pm

1 stop18h 43m

Chicago O'Hare Intl

Thu 9/4

10:42 am-7:54 pm

1 stop11h 12m

$219

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

Thu 10/2

3:06 pm-12:01 am

1 stop6h 55m

Minneapolis St Paul

Wed 10/8

7:00 am-12:37 pm

1 stop7h 37m

$220

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

Mon 9/8

3:30 pm-11:10 pm

1 stop5h 40m

Minneapolis St Paul

Tue 9/16

6:50 pm-10:05 pm

1 stop5h 15m

$221

OntarioChicago

ONT - ORD

ONTORD

Ontario

Mon 8/25

5:09 pm-9:42 pm

1 stop26h 33m

Chicago O'Hare Intl

Thu 8/28

6:00 am-11:50 pm

1 stop19h 50m

$221

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

Tue 9/2

12:59 am-8:54 pm

1 stop17h 55m

Minneapolis St Paul

Wed 9/10

8:00 am-7:54 pm

1 stop13h 54m

$222

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

Wed 10/15

6:53 am-11:53 pm

1 stop15h 00m

Minneapolis St Paul

Fri 10/17

6:00 am-9:35 am

1 stop5h 35m

$224

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/9

Showing 1-10 of 60 results
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Best time to book a flight from Ontario to Wisconsin

Have a flexible travel schedule? Discover the best time to fly to Wisconsin from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Wisconsin

What is the cheapest month to book a flight from Ontario to Wisconsin?

Currently, February is the cheapest month in which you can book a flight from Ontario to Wisconsin (average of $280). Flying from Ontario to Wisconsin in June is currently the most expensive (average of $376). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to WI?

Find hourly flight availability from Ontario to Wisconsin. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 11, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Wisconsin as you normally would.

Reviews of airlines servicing Wisconsin

Get insights into the airlines that provide service to Wisconsin. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Wisconsin. Reviews last updated August 11, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta from Ontario to Wisconsin. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,246 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,978 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,647 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,922 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Wisconsin. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Wisconsin?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Wisconsin.

  • What are the most popular routes from Ontario to Wisconsin?

    The most popular flight routes from Ontario to Wisconsin are Ontario - Chicago O'Hare Intl, Ontario - Minneapolis St Paul and Ontario - Milwaukee-Mitchell.

  • Can I find deals for flights from Ontario to Wisconsin that include hotel bookings?

    Yes. In addition to deals on Ontario to Wisconsin flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Wisconsin?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Wisconsin.

  • Can I find deals for business class flights from Ontario to Wisconsin?

    Yes. Cheapflights offers flight deals from Ontario to Wisconsin by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Wisconsin?

    Currently, February is the cheapest month in which you can book a flight from Ontario to Wisconsin (average of $280). Flying from Ontario to Wisconsin in June is currently the most expensive (average of $376). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Ontario to Wisconsin

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Ontario to Wisconsin

Discover the top 5 airlines that operate flights from Ontario to Wisconsin. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$72Average$218FlexibilityNo cancel feeOn-time62%
DeltaCheapest$253Average$419FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$288Average$470FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$288Average$531FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$326Average$417FlexibilityNo cancel feeOn-time63%

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